A "Local" train leaves a station and runs at an average rate of 35 mph. An hour and a half later an "Express" train leaves the station and travels at an average rate of 56 mph on a parallel track. How many hours after the Express train starts will the it overtake the Local?

Question

Litzy Mcmahon

28 June, 08:57

+5

Answers (2)

Know the Answer?

Angie Landry · Answer 1

X=2.5 h = 2 h. 30 min.

Presley Sweeney · Answer 2

Hello,

Let's assume x the time the express runs.

56*x=35 * (1.5+x)

==>21x=52.5

==>x=2.5 h = 2 h 30 min